1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/*-
* Copyright (c) 2009 Aditya Sarawgi
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _FS_EXT2FS_EXT2_DINODE_H_
#define _FS_EXT2FS_EXT2_DINODE_H_
#define e2di_size_high e2di_dacl
/*
* Special inode numbers
* The root inode is the root of the file system. Inode 0 can't be used for
* normal purposes and bad blocks are normally linked to inode 1, thus
* the root inode is 2.
* Inode 3 to 10 are reserved in ext2fs.
*/
#define EXT2_BADBLKINO ((ino_t)1)
#define EXT2_ROOTINO ((ino_t)2)
#define EXT2_ACLIDXINO ((ino_t)3)
#define EXT2_ACLDATAINO ((ino_t)4)
#define EXT2_BOOTLOADERINO ((ino_t)5)
#define EXT2_UNDELDIRINO ((ino_t)6)
#define EXT2_RESIZEINO ((ino_t)7)
#define EXT2_JOURNALINO ((ino_t)8)
#define EXT2_FIRSTINO ((ino_t)11)
/*
* Inode flags
* The current implementation uses only EXT2_IMMUTABLE and EXT2_APPEND flags
*/
#define EXT2_SECRM 0x00000001 /* Secure deletion */
#define EXT2_UNRM 0x00000002 /* Undelete */
#define EXT2_COMPR 0x00000004 /* Compress file */
#define EXT2_SYNC 0x00000008 /* Synchronous updates */
#define EXT2_IMMUTABLE 0x00000010 /* Immutable file */
#define EXT2_APPEND 0x00000020 /* writes to file may only append */
#define EXT2_NODUMP 0x00000040 /* do not dump file */
#define EXT2_NOATIME 0x00000080 /* do not update atime */
/*
* Definitions for nanosecond timestamps.
* Ext3 inode versioning, 2006-12-13.
*/
#define EXT3_EPOCH_BITS 2
#define EXT3_EPOCH_MASK ((1 << EXT3_EPOCH_BITS) - 1)
#define EXT3_NSEC_MASK (~0UL << EXT3_EPOCH_BITS)
#define E2DI_HAS_XTIME(ip) (EXT2_INODE_SIZE((ip)->i_e2fs) > \
E2FS_REV0_INODE_SIZE)
/*
* Structure of an inode on the disk
*/
struct ext2fs_dinode {
uint16_t e2di_mode; /* 0: IFMT, permissions; see below. */
uint16_t e2di_uid; /* 2: Owner UID */
uint32_t e2di_size; /* 4: Size (in bytes) */
uint32_t e2di_atime; /* 8: Access time */
uint32_t e2di_ctime; /* 12: Change time */
uint32_t e2di_mtime; /* 16: Modification time */
uint32_t e2di_dtime; /* 20: Deletion time */
uint16_t e2di_gid; /* 24: Owner GID */
uint16_t e2di_nlink; /* 26: File link count */
uint32_t e2di_nblock; /* 28: Blocks count */
uint32_t e2di_flags; /* 32: Status flags (chflags) */
uint32_t e2di_version; /* 36: Low 32 bits inode version */
uint32_t e2di_blocks[EXT2_N_BLOCKS]; /* 40: disk blocks */
uint32_t e2di_gen; /* 100: generation number */
uint32_t e2di_facl; /* 104: file ACL (not implemented) */
uint32_t e2di_dacl; /* 108: dir ACL (not implemented) */
uint32_t e2di_faddr; /* 112: fragment address */
uint8_t e2di_nfrag; /* 116: fragment number */
uint8_t e2di_fsize; /* 117: fragment size */
uint16_t e2di_linux_reserved2; /* 118 */
uint16_t e2di_uid_high; /* 120: Owner UID top 16 bits */
uint16_t e2di_gid_high; /* 122: Owner GID top 16 bits */
uint32_t e2di_linux_reserved3; /* 124 */
uint16_t e2di_extra_isize;
uint16_t e2di_pad1;
uint32_t e2di_ctime_extra; /* Extra change time */
uint32_t e2di_mtime_extra; /* Extra modification time */
uint32_t e2di_atime_extra; /* Extra access time */
uint32_t e2di_crtime; /* Creation (birth)time */
uint32_t e2di_crtime_extra; /* Extra creation (birth)time */
uint32_t e2di_version_hi; /* High 30 bits of inode version */
};
#endif /* !_FS_EXT2FS_EXT2_DINODE_H_ */
|
